Children in hospital usually turn to ______ in order to catch up with their school work.

A．every child in hospital receives some teaching
B．not enough is known about hospital teaching
C．hospital teaching is of good quality
D．the special children's hospitals are worst off

A．hospital teaching across the country is similar
B．each hospital has at least one part-time teacher
C．all hospitals surveyed offer education to children
D．only one fourth of the hospitals have fulltime teachers